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Cargo Space and Storage Rating:

The Ioniq fits about as much luggage as other members of its class and more than some larger competitors. Interior cubby storage lags behind rivals, but Hyundai has employed some clever tricks to maximize what space is available.

The Ioniq outperformed every competitor tested here in carry-on capacity behind the second-row seats. Even the boxier Kia Niro, which shares its chassis and hybrid powertrains with the Ioniq, fell short of its platform mate.

Test Results: Carry-On Luggage Test Results

Cargo Configurations

Cargo Volume Comparisons

The Ioniq has two cubic feet of cargo space more than the Toyota Prius. Despite its slight profile, grocery duty and family road trips won’t pose a problem for Ioniq owners.

Lift-Over Height

Test Results: Lift-Over Height

Interior Cubby Storage

Despite its prowess in cargo hauling, the Ioniq doesn’t have as much space for personal effects as the competitors we’ve tested here. In practice, though, front-seat passengers should have enough storage to keep them happy. We were fond of the large cubby forward of the shifter and the long, slim pocket on the passenger side of the center console, designed to hold a tablet but also well suited for smartphones.

Why do we use ping-pong balls?

To determine the interior space available to stash travel essentials, we’ve devised a range of measuring protocols. We use six beverage containers ranging in size and shape to gauge cupholder accommodation. We stack, stuff, and arrange 9-by-14-by-22-inch cardboard boxes to quantify the number of airline-carry-on-size suitcases that will fit in a trunk or folded seat’s cargo space. To measure irregularly shaped gloveboxes, door pockets, and console bins, we fill each container with 1.5-inch-diameter ping-pong balls. It’s tempting to convert the number of spheres to a volume (cubic inches), but we resist that calculation because—as with the box of tissues, 12-ounce can of soda, or gallon of milk you might stash in these compartments—there are voids between the balls. Random packing (our procedure) nullifies approximately one-third of the available space. The negative space between the balls could theoretically be reduced to 25 percent of an irregular shape with precise stacking, but while we might be pedantic, we’re not crazy.